Fan

Abstract

The invention is based on a blower ( 10 ) with an electric motor ( 52 ) whose drive shaft ( 40 ) supports a radial impeller ( 30 ) whose blower housing ( 14 ), in an end face wall ( 20 ), has an inlet opening ( 24 ) through which air is aspirated and which is adjoined by a sound damper ( 12 ) whose housing ( 16 ) is fastened to the blower housing ( 14 ) with fastening elements, wherein a common end wall ( 20 ) is provided between the housing ( 16 ) and the blower housing ( 14 ). It is proposed that the housing ( 16 ) of the sound damper ( 12 ) constitute the end wall ( 20 ) of the blower housing ( 14 ) and define the chamber ( 28 ) for the impeller ( 30 ).

What is claimed is:  
     
       1. A blower ( 10 ) with an electric motor ( 52 ) whose drive shaft ( 40 ) supports a radial impeller ( 30 ) having a blower housing ( 14 ), wherein a common end wall ( 20 ) is provided between a housing ( 16 ) for a sound damper ( 12 ) and the blower housing ( 14 ), wherein said common end wall ( 20 ) has an inlet opening ( 24 ) through which air is aspirated and which is adjoined by the sound damper ( 12 ) whose housing ( 16 ) is fastened to the blower housing ( 14 ) with fastening elements, characterized in that the housing ( 16 ) of the sound damper ( 12 ) constitutes the common end wall ( 20 ) of the blower housing ( 14 ) and defines a chamber ( 28 ) for the impeller ( 30 ), wherein the common end wall of the housing ( 16 ) is constituted by a disk ( 20 ), wherein said disk is clamped between the sound damper ( 12 ) and the blower housing ( 14 ), wherein the disk ( 20 ) is stamped out of sheet metal and has a funnel-shaped inlet opening ( 24 ) in the center, with a collar ( 26 ) formed onto it, where said collar protrudes into the chamber ( 28 ) for the impeller ( 30 ). 
     
     
       2. The blower ( 10 ) according to  claim 1 , characterized in that the housing ( 16 ) of the sound damper ( 12 ) is fastened to the blower housing ( 14 ) by means of retaining clips ( 18 ). 
     
     
       3. The blower ( 10 ) according to  claim 1 , characterized in that the sound damper ( 12 ) contains sound absorption material ( 22 ) which encompasses air conduits and is prestressed against the common end wall ( 20 ). 
     
     
       4. The blower ( 10 ) according to  claim 1 , characterized in that the blower housing ( 14 ) is an integral component of a housing of the electric motor ( 52 ). 
     
     
       5. The blower ( 10 ) according to  claim 1 , characterized in that the sheet metal disk ( 20 ) rests in a recess ( 32 ) of the blower housing ( 14 ) and is guided along its outer diameter ( 28 ). 
     
     
       6. The blower ( 10 ) according to  claim 5 , characterized in that on its side oriented toward the blower ( 10 ), the housing ( 16 ) of the sound damper ( 12 ) has a collar ( 34 ) which is inserted into the recess ( 32 ) of the blower housing ( 14 ) along with the sheet metal disk ( 20 ). 
     
     
       7. The blower ( 10 ) according to  claim 6 , characterized in that on its side oriented toward the blower ( 10 ), the housing ( 16 ) of the sound damper ( 12 ) has an additional collar ( 36 ) which overlaps the blower housing ( 14 ) along its circumference.